PALIN - The Next Palindrome
A positive integer is called a palindrome if its representation in the decimal system is the same when read from left to right and from right to left. For a given positive integer K of not more than 1000000 digits, write the value of the smallest palindrome larger than K to output. Numbers are always displayed without leading zeros.
Input
The first line contains integer t, the number of test cases. Integers K are given in the next t lines.
Output
For each K, output the smallest palindrome larger than K.
Example
Input: 2 808 2133 Output: 818 2222
Warning: large Input/Output data, be careful with certain languages
hide comments
Jesus E. Larios Murillo:
2015-07-01 05:51:25
Okay for those people coding in c. I have been taught that the correct way of getting input is to use fgets(buffer, buffer_size, stdin). This avoids overflows. This brings in the new line character also, so I follow it by buffer[strlen(buffer) - 1) = '\0', to get rid of it. This is what I tried to do with this problem, and I have spent HOURS trying to figure out why it doesn't work, even though everything seems right. Finally, serendipitously, I changed the fgets to scanf("%s", buffer), and the code that was not passing before is now passing. I have no words to describe this feeling. Can someone tell me why fgets doesn't work?
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Tanuj Kumar:
2015-06-27 08:42:24
This shows WA all the time. Hours of effort for nothing.
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ankur_gupta54:
2015-06-26 14:10:07
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Anurag Pasi:
2015-06-26 10:42:48
after 3 WA finally got green AC , there is no great feeling than doing it yourself and debugging it urself also, it sometimes get frustated to debug but when bug is fixed and got AC, then i m on top of da world :)
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Ishaan:
2015-06-24 18:55:56
Getting TLE when compiling the problem. Almost tested for test case my algorithm works fine. I am using python for the problem. How to minimize my time. Any suggestion will welcomed. (I am newbie in python - any helpful syntax??) |
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kunal:
2015-06-23 19:18:44
How to store a 100000 digit no ?? |
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sg300691:
2015-06-22 17:07:37
getting the correct answer of my code on my pc and also on ideone |
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Amitayush Thakur:
2015-06-22 10:15:09
This problem requires you to take care of so many test cases. There is a possibility of error even when you check for tricky cases like 9,99,100,101 etc. Also do remember answer for single digit numbers will not be 11.
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MANISH KUMAR:
2015-06-21 21:19:40
pleaselet me know the answer Last edit: 2015-06-21 21:21:02 |
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MANISH KUMAR:
2015-06-21 21:15:38
i have checked with 9,11,99,100,9999, and the output is 11,22,101,101,1001,but stillwa |
Added by: | adrian |
Date: | 2004-05-01 |
Time limit: | 2s-9s |
Source limit: | 50000B |
Memory limit: | 1536MB |
Cluster: | Cube (Intel G860) |
Languages: | All except: NODEJS PERL6 |